Very much this. Plus you look at the early successful films and they were all just a little bit grounded (and I mean this in the loosest sense as a superhero film can never really be grounded) and those tend to be the better films (Iron Man, the 3 Captain America films, Spiderman filsm etc). I lost interest in the comics (and both Marvel and DC did this) when it all went multiversal and the same is happening with the films.
The films also used to be relatively self contained as well with only the post credit scent building to the next one whereas now all of the films are a build up to the next thing.
Exactly that with the more self contained films but these aren't little hints with Easter eggs as to what's next it's just you must notice this and onto the next film
However that said their my kind of films I like the multiverse, much how Keaton Is returning as batman (would have loved to have seen Patterson, Keaton, bale all at once) love the idea of different versions of hero's like batman where bruce was shot in the alley and Thomas Wayne became batman instead
Those kind things
But hey it's an escape from reality
Enjoy most them. Didn't enjoy black panther 2 but I think that film was just hindered by the star passing away and it becoming a massive tribute to him film rather than a film. Overshadowed (rightly) the film but just made it boring (bad to say)
Long as we don't get iron man return! He done my nut in lol bring back cap tho